Ink jet head having an improved ink discharge surface and ink jet apparatus equipped with the head
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United States of America Patent
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Sep 19, 1995
Grant Date -
N/A
app pub date -
Oct 29, 1992
filing date -
Oct 29, 1991
priority date (Note) -
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Abstract
An ink jet head accomplishes high quality recording for a long term by an improved liquid repellency treatment. This liquid repellency treatment is applied to at least a peripheral portion of a discharge port on an ink discharge port forming surface of the ink jet head. A mixture of a fluorine-containing high polymer compound and a compound having fluorine substituted hydrocarbon group and a silazane group, alkoxysilane group or halogenized silane group is employed as a liquid repellent agent.
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